Question

математека :))))))))))))

Answer 1

a) 12 + x = 0
x = -12

b)2x + x -18=0
3x-18=0
3x =18
x=6

C)-17x=17
x= -1

D)3x=-15
x=-5

Answer 2

1)х=2-14
х=-12
2)3х-16=2
3х=2+16
3х=18
х=6
3)-17х=25-8
-17х=17
х=-1
4)-х-2х=20-5
-3х=20-5
х=-5